Create direct client sessions and retrieve FPX bank list.
$response = $direct->payment()->createSession([
'customer_name' => 'Testing User',
'customer_email' => 'email@testing.com',
'customer_phone' => '011223344',
'order_id' => '56',
'amount' => '24.50',
'detail' => 'Order #1234',
'payment_method' => 'fpx',
]);
$response->toArray();
// ['status' => 'success', 'url' => 'https://...', ...]
Hash computed over $secretKey . customer_name . customer_email . customer_phone . order_id . amount . detail . payment_method.
$response = $direct->fpxBank()->list();
$response->toArray();
// ['status' => 'success', 'bank_list' => [...]]